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Quantitative analysis - Estimation of Elements
After qualitative analysis of elements, the another step in the determination of molecular formula of an organic compound is the estimation of several elements by mass, that is finding the percentage composition of the elements by mass. The several methods generally employed for the estimation of principal elements are as follow:
1. Carbon and Hydrogen
2. Nitrogen
3. Halogens
4. Sulphur
5. Phosphorous
6. Oxygen
uses of potassium oxalato aluminate
I have the following reactions (1)NaOH+CO2+M=NaHCO3+M, K1 (2)NaHCO3+H=Na+H2CO3, K2 (3)2NaHCO3+M=(NaHCO3)2+M, K3 ki''s are the rate constants. Suppose NaHCO3 is a dominating constit
The maximum number of unpaired electron can be present in d orbitals are: (1) 1 (2) 3 (3) 5 (4) 7 Ans: 5
What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number value is 4: (1) 10 (2) 18 (3) 32
Q. Explain the Purity Tests of sesame oil? Purity tests for oils/fats would include analyzing the samples for the presence of sesame oil, cottonseed oil, linseed oil, argemone
Draw the structures of white phosphorus and red phosphorus. Which one of these two types of phosphorus is more reactive and why?
The bond energy of an O- H bond is 109 kcal mol 1. When a mole of water is formed from H and O atoms, then 218 kcal is released. Two O-H bonds are there is H2O so 2*109 kcal an
why boron have maximum covalency 4 and others have maximum covalency 6
diagonal relationship of Be and Al
DISCUSS THE THEORY OF SOFT AND HARD ACID AND BASE
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